A tool which accesses a Web log file and produces summary reports based on the contents of the file. Typical reports include the number of hits that a Web page receives, a list of popular pages in ascending or descending order and a breakdown in terms of domains of the users who have visited the site. The more sophisticated tools offer a variety of formats for these reports ranging from those written in HTML to those which can be read and displayed by a word processor or spreadsheet program. Advanced tools also allow users to customize the reports that are produced. The development of these tools is a burgeoning Internet industry. At one time their users were mainly Webmasters interested in obtaining information which enabled them to optimize their Web site, but the user base has now shifted to marketing staff who are interested in the way customers access pages on electronic commerce sites.